World War I (WWI<span> or WW1), also </span>known<span> as the First World War, the </span>Great War<span>, or the War to End ... Within weeks the major powers were at war, and the </span>conflict soon<span> spread around the world. .... While these agreements </span>did<span> not formally ally Britain with France or Russia, they made British entry into any future</span>conflict<span> involving ...